Rozwiąż równania.
a) x do potegi 3 + 5x do potegi 2 + 3x+15=0
b)x do potegi 3 - 3x do potegi2 -4x+12=0
c)2x do do potegi 4 - x do potegi 3 + 16x - 8= 0
d) x do potegi 4 - 3x do potegi 3 = 3-x
e) 4x do potegi 3 - 8x do potegi 2 = x-2
f) 12x do potegi 3 - 2 = 3x do potegi 2 -8x
g) 54xdo potegi4= 27x do potegi 3 + 2x - 1
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